RS-485 Bus Servo Series for Industrial Automation
RS-485 Bus Servo Series
Compare compact, high-torque RS-485 bus servos with brushless motors and all-metal construction. Filter 12V and 24V models by torque, dimensions and mechanical configuration, then review pricing, availability and PLC integration resources.
- 12 current models
- 12V and 24V classes
- 2.74–9.80 N·m
- Brushless motors
Core Features
Built for Reliable Multi-Node Motion
RS-485 differential signaling helps keep commands and feedback dependable across larger machines, longer cable layouts and electrically demanding environments.
Differential Communication
A balanced A/B signal pair rejects common-mode interference more effectively than single-ended serial links.
Strong Noise Immunity
A practical fit near motors, drives and switching equipment when wiring and grounding are planned correctly.
Long Communication Distance
Supports longer cable layouts than typical TTL UART designs; actual reach depends on baud rate and installation.
Multi-Node Control
Address multiple servos on one shared bus for coordinated joints and cleaner system wiring.
Bidirectional Feedback
Read supported operating data such as position and status through the documented protocol.
Development Support
Use wiring, protocol and selected PLC integration resources to shorten commissioning time.
RS-485 Model Range
RS-485 Bus Servo Models: 28 kg, 50 kg and 100 kg
Compare all 12 current models using the product groups, dimensions and weights published in the official RS-485 Wiki, plus voltage and mechanical-configuration data from the Store collection.
Compact 28 kg Models
40 × 20 × 46 mmWeight
96 g
Mid-Range 50 kg Models
40 × 20 × 46 mmWeight
96 g
High-Torque 100 kg Models
63 × 34 × 47 mmWeight
230 / 260 g
Choose a torque class first, then select 12V or 24V and confirm dimensions, weight and mechanical configuration on the product page.
When Should You Choose an RS-485 Bus Servo?
Use this overview to compare control paths, then confirm wiring, topology, termination and controller support in the relevant documentation.
| Selection factor | UART | RS-485 | CAN | PWM |
|---|---|---|---|---|
| Control signal / bus | UART serial; UC-01 converts TX/RX to one half-duplex S signal | RS-485 differential A/B pair | CAN bus; CANBUS and UAVCAN | Standard PWM pulse-width signal (20 ms period) |
| Wiring approach | Shared signal line plus power; short-distance integration | Shared A/B differential pair plus power; suited to longer runs | Shared CAN bus plus power; distributed nodes | One PWM control signal per servo plus power |
| Feedback & control | Angle, temperature, voltage, current, power and status feedback; closed-loop control | Angle, temperature, voltage, current, power and status feedback; closed-loop control | Angle, temperature, voltage, current, power and status feedback | No data feedback; no closed-loop control |
| Built-in control functions | Single-/multi-turn position, damping, synchronous and asynchronous commands | Single-/multi-turn position, damping, synchronous and asynchronous commands | Real-time CAN control and status communication | Position command by pulse width; protection parameters configurable |
| Communication strengths | Simple development and compact wiring | Strong noise immunity and long-distance differential communication | High real-time performance, robust interference resistance and multi-node networking | Simple, familiar controller interface |
| Best-fit applications | Education, research, robot joints and short-distance systems needing monitoring | Industrial, medical and research systems needing long-distance, noise-resistant control | UAVs, AGVs, autonomous platforms and reliable mobile robots | Education, RC models, vehicles/boats and cost-sensitive applications without feedback |
Choose RS-485 when you need differential serial communication, longer cable runs, noise resistance and addressed multi-servo control.
Ask for Selection HelpApplications / Solutions
Designed for Larger, Noisier and More Distributed Machines
RS-485 is especially useful when actuators are spread across a machine or robot and must share a dependable command-and-feedback path.
Industrial Robotic Arms
Coordinate multiple joints with addressed nodes and operating feedback.
Mobile Robots
Connect distributed actuators across mobile platforms and mechanisms.
Automation Equipment
Integrate compact axes and fixtures into supported PLC workflows.
Larger Robot Systems
Scale from individual axes to coordinated multi-node motion networks.
Long-Cable Multi-Joint Robots
Improve communication resilience across extended machine cable routes.
Medical & Lab Equipment
Use addressed differential communication for distributed instruments and research mechanisms.
SDK & Platform Support
Develop with the Platforms You Already Use
Use the same development ecosystem shown across the Fashion Star Bus Servo Hub, with RS-485 wiring and protocol details verified in the product Wiki.
Arduino
STM32
ESP32
Raspberry Pi
Python
ROS / ROS2
Jetson
C++ / MATLABUse protocol documentation, APIs, software tools and PLC integration resources to move from wiring to motion control.
Resources
Documentation and Engineering Resources
Find the same resource categories used on the Bus Servo Hub, linked to the RS-485 documentation and current product collection.
User Manual
Read wiring instructions, communication settings and model documentation.
SDK
Access the Fashion Star SDK and platform resource area.
API
Review commands, feedback data and integration examples.
CAD Files
Open the CAD and 3D model resource area for mechanical design.
PC Software
Access software tools and related technical resources.
Wiki / FAQ
Browse RS-485 documentation and troubleshooting resources.
Choose, Buy and Integrate RS-485 Servos
Compare the 12 current models in the Store, then use the official Wiki for wiring, commands, feedback data and PLC resources.
FAQ
RS-485 Bus Servo FAQ
Answers are limited to information published in the Fashion Star Store, RS-485 Wiki and shared Bus Servo Hub resources.
What RS-485 servo groups are currently documented?
The official Wiki lists brushless 28 kg, 50 kg and 100 kg groups. The first two groups use 40 × 20 × 46 mm housings at 96 g; the 100 kg group uses a 63 × 34 × 47 mm housing at 230 / 260 g.
What input-voltage ranges are available?
The Store collection currently provides 9.0–12.6V and 18.0–25.2V filter ranges, represented as 12V and 24V model classes on product cards.
Where can I find wiring and communication settings?
The RS-485 Wiki provides wiring instructions, communication settings, command references, feedback data and integration examples.
Which PLC integration resources are listed?
The official RS-485 Wiki lists PLC function block libraries and guides for supported Siemens, Mitsubishi and Inovance controllers.
Where can I review feedback data and commands?
Use the RS-485 Wiki for command references, feedback data, APIs, software tools and troubleshooting resources.
Where can I compare all current RS-485 models?
The Store collection lists all 12 current models with voltage, torque, weight, mechanical configuration, pricing and availability.
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